In a statement, Radziwill confirmed: "Russ and I have decided to call it quits."

The couple had been dating for about two years, but Radziwill joked that she isn't worried about Valentine's Day on Thursday.

"I haven't celebrated Valentine's Day since the fifth grade when the boy I had a crush on gave me a valentine, only to find out later that he gave one to the entire class, including the boys," she quipped.